Excellent summary and a really essential video; so many physics students are confused by this and so many electricians still insist that positive charges do flow!
Hi, yes, I get this question so often on the videos I post which deal with electricity, that I had to make a dedicated video to clarify things... (like this I do not need to explain it over and over in my responses, I just refer to the video now ;-) )
@7:40 I like to think of it as positive ions moving one way vs. negative particles. Today however, even saying negative “particle” may be a problem since physicists can’t seem to make up their mind if the electron is a particle or a wave. Some say both and I know of one who insists it’s a wave only.
When dealing with electricity in regards to macroscopic applications, introducing QM concepts is not needed. Electrons can be seen as charge carrying particles, or you can invent positive charge carrying particles for the conventional current. Actually, in circuits, what is of interest is the charge itself (a property of the particle). So whether you consider the charge carrier like a particle, a wave or even as an abstract mathematical sum of properties that give life to interactions, it doesn't really matter....
Now the question I’ve been itching to ask all the UA-camrs that have presented the JJ Thomson experiment … staring right at you in the diagram are positive and negative designations, how did anyone know what to call the connections of batteries and plates as positive and negative since the negative still hadn’t been discovered?
Hi Robert, Before the 1850s, to determine if an object was positively or negatively charged would be done by tribolelectric experiments (Rub two objects to each other, do they attract? do they repel?.. you could identify when charges were the same or opposite). Based on Franklin's model of a single fluid, and with multiple experiments, you could figure out which object has more fluid than the other (+ and -), or if they were both were in deficit of that fluid (both -), or both in excess (both +)... and thus deduce which was the + , and which was the -.
I am not entirely sure what you mean as I do not see P.D. written in the video around 8:55. P.D. stands for potential difference. A negative potential difference means that the final potential is less (or more negative) than the initial potential.
It was helpful.... I've a question when we connect a circuit to a galvanometer to check the direction of current. Does the galvanometer shows conventional current or electronic current?
that's a good question... It just depends on the label you stick around the needle... I extrapolate here, but I suppose it would show the conventional current because the latter is the default current used in electric circuits.
But how could positive charge or posite charged ions move I have read that flow of charge is only by electrons or by ions when dissolved in aqueos sloution (electrolyte) But in wire flow of ions or positive chrges is impossible Could u plx clearify ??
Hi Xiloxar, you are right, in a wire, it's the negatively charged electron that move around... But is is the "conventional" current model that is used as standard. Why? Check the video! I do suggest you watch the video again... I produced it because I was bombarded with comment similar to yours on my other 'electricity' videos!
Will you please explain what exactly of electric potential and difference b/w electric potential and electric potential difference And one more topic displacement current
That’s why electricity is so hard to comprehend also the loss from potential creates magnetism force in motion which you call you call potential everything is backwards and Thompson didn’t say an electron was a particle but one unit of the dielectric
I do not trust the automatic UA-cam translation system to be rigorous enough for science videos and they can cover important features of the video (that is why I manually add the subtitles in the video itself...). As for Arabic, I do not speak that language... Although I like how it sounds, and might learn it one day :-)
@@capofigo The + is a + (a position of excess in positive charges). Positive charges would be repelled by it (Conventional current). Negative charges are attracted to it (real electron flow).
For me, it depends on your definition of current. Some people define current as a flow of charge, others as a flow of electrons. If you interpret current as a flow of charge, then conventional current flow (flow of positively charged particles) could be defined as correct. However, electron flow (flow of negatively charged particles) could also be correct. If you define current as a flow of electrons, then conventional current is nonsense. For me, current flow is electron flow, therefore conventional current flow is bullshit - but I don't imagine this argument will ever be completely settled. Conventional current flow is (sadly IMHO) too well established and most, if not all, of its proponents seem very resistant to change.
Hello Karl, So if electric current is only electron flow, what about the motion of ions charged positively or negatively in the electrolyte of your car battery? How would you call that ? 😉. Electric current is a flow of charge (negative and positive). This is not an opinion. Electron flow has for consequence one type of electric current, and it happens to be a very common because it is the one in metallic materials, thus in the wires of circuits. By convention, the current has a positive value (direction) when positive charges flow, and a negative value (direction) when negative charges flow. It could have been the other way round, i wouldn’t have cared less. But what is important is that this convention is used by all so that we can communicate!
Excellent summary and a really essential video; so many physics students are confused by this and so many electricians still insist that positive charges do flow!
Hi, yes, I get this question so often on the videos I post which deal with electricity, that I had to make a dedicated video to clarify things... (like this I do not need to explain it over and over in my responses, I just refer to the video now ;-) )
Wow, this channel deserves to have millions of subs, it's the best in explaining physics that I've ever seen.
Thank you so much @rolovolo for these kind words. they encourage me!
Amazing explanation 👏
@7:40 I like to think of it as positive ions moving one way vs. negative particles. Today however, even saying negative “particle” may be a problem since physicists can’t seem to make up their mind if the electron is a particle or a wave. Some say both and I know of one who insists it’s a wave only.
When dealing with electricity in regards to macroscopic applications, introducing QM concepts is not needed. Electrons can be seen as charge carrying particles, or you can invent positive charge carrying particles for the conventional current. Actually, in circuits, what is of interest is the charge itself (a property of the particle).
So whether you consider the charge carrier like a particle, a wave or even as an abstract mathematical sum of properties that give life to interactions, it doesn't really matter....
Thank you so much sir
You actually deserve a lot more subscribers and views. I encourage you to keep posting more videos because it helps a lot ❤😊
Thank you so much for your kind words :-)
Now the question I’ve been itching to ask all the UA-camrs that have presented the JJ Thomson experiment … staring right at you in the diagram are positive and negative designations, how did anyone know what to call the connections of batteries and plates as positive and negative since the negative still hadn’t been discovered?
Hi Robert,
Before the 1850s, to determine if an object was positively or negatively charged would be done by tribolelectric experiments (Rub two objects to each other, do they attract? do they repel?.. you could identify when charges were the same or opposite). Based on Franklin's model of a single fluid, and with multiple experiments, you could figure out which object has more fluid than the other (+ and -), or if they were both were in deficit of that fluid (both -), or both in excess (both +)... and thus deduce which was the + , and which was the -.
Great explanation with demonstration.
Thank you Muhammad!
Thank you very much, I want to know that for ages!
Thank you for making these
Would like to see a video of the energy flow of the universe. The continual flow from high to low. And why we don't see any heat death.
In other words, you mean a video about the second law of the thermodynamics. It's on my list :-)
Thanks sir
thank you for videos , I love you .
excellent,,,
8:55 i can't understand about what does the 'negative P.d' indicate
I am not entirely sure what you mean as I do not see P.D. written in the video around 8:55.
P.D. stands for potential difference. A negative potential difference means that the final potential is less (or more negative) than the initial potential.
It was helpful.... I've a question when we connect a circuit to a galvanometer to check the direction of current. Does the galvanometer shows conventional current or electronic current?
that's a good question... It just depends on the label you stick around the needle...
I extrapolate here, but I suppose it would show the conventional current because the latter is the default current used in electric circuits.
@@PhysicsMadeEasy okay
ANOTHER INSPIRING VIDEO!!
Thanks much,
--dALE
But how could positive charge or posite charged ions move
I have read that flow of charge is only by electrons or by ions when dissolved in aqueos sloution (electrolyte)
But in wire flow of ions or positive chrges is impossible
Could u plx clearify ??
Hi Xiloxar, you are right, in a wire, it's the negatively charged electron that move around... But is is the "conventional" current model that is used as standard. Why? Check the video!
I do suggest you watch the video again... I produced it because I was bombarded with comment similar to yours on my other 'electricity' videos!
Will you please explain what exactly of electric potential
and difference b/w electric potential and electric potential difference
And one more topic displacement current
Hi, I made a video on this topic: check the video 'what is an electric potential?' on the channel.
@@PhysicsMadeEasy thankyou so much will you please elaborate displacement current too...
First!
Congrats!
That’s why electricity is so hard to comprehend also the loss from potential creates magnetism force in motion which you call you call potential everything is backwards and Thompson didn’t say an electron was a particle but one unit of the dielectric
Hi Johnny, from what you wrote, you seem quite confused...recommendation: reset, pick up a good textbook and start over on the basics ...
Hello.. Can you put the Arabic translation? I am very interested, please and thank you ❤
I do not trust the automatic UA-cam translation system to be rigorous enough for science videos and they can cover important features of the video (that is why I manually add the subtitles in the video itself...). As for Arabic, I do not speak that language... Although I like how it sounds, and might learn it one day :-)
My dream is to communicate with you doctor and ask you many questions
So Diode manufacturers tell us the poles reversed for use with the conventional current?
Be careful, in a diode, the poles are not reversed... It's the flow of charged particles that is.
@@PhysicsMadeEasy so the plus is actually not a minus?
@@capofigo The + is a + (a position of excess in positive charges). Positive charges would be repelled by it (Conventional current). Negative charges are attracted to it (real electron flow).
For me, it depends on your definition of current. Some people define current as a flow of charge, others as a flow of electrons. If you interpret current as a flow of charge, then conventional current flow (flow of positively charged particles) could be defined as correct. However, electron flow (flow of negatively charged particles) could also be correct. If you define current as a flow of electrons, then conventional current is nonsense.
For me, current flow is electron flow, therefore conventional current flow is bullshit - but I don't imagine this argument will ever be completely settled. Conventional current flow is (sadly IMHO) too well established and most, if not all, of its proponents seem very resistant to change.
Hello Karl,
So if electric current is only electron flow, what about the motion of ions charged positively or negatively in the electrolyte of your car battery? How would you call that ? 😉.
Electric current is a flow of charge (negative and positive). This is not an opinion. Electron flow has for consequence one type of electric current, and it happens to be a very common because it is the one in metallic materials, thus in the wires of circuits.
By convention, the current has a positive value (direction) when positive charges flow, and a negative value (direction) when negative charges flow. It could have been the other way round, i wouldn’t have cared less. But what is important is that this convention is used by all so that we can communicate!
I posted an answer yesterday and now it's gone. Did you delete it?
@@karlg5348 no I haven't
Hello sir 😊
Hello 😊